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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12081082 B1

PDFFull Text
Date of Patent:
Sep. 03, 2024

Filed:

Feb. 02, 2021

Laminated core and method for producing a laminated core

Applicant:

Vacuumschmelze Gmbh & Co. KG, Hanau, DE;

Inventors:

Frederic Bäcker, Darmstadt, DE;

Jens Diehl, Langenselbold, DE;

Assignee:

VACUUMSCHMELZE GMBH & CO. KG, Hanau, DE;

Attorney:

Dickinson Wright PLLC

Primary Examiner:

Alex W Mok

Int. Cl.
CPC ...
H02K 15/02 (2006.01); B23K 26/0622 (2014.01); B23K 26/082 (2014.01); B23K 26/21 (2014.01); B23K 26/38 (2014.01); B32B 15/01 (2006.01); B32B 37/06 (2006.01); B32B 38/00 (2006.01); C22C 30/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); H01F 1/147 (2006.01); H02K 1/02 (2006.01); H02K 1/16 (2006.01);
U.S. Cl.
CPC ...
H02K 15/024 (2013.01); B23K 26/0622 (2015.10); B23K 26/082 (2015.10); B23K 26/21 (2015.10); B23K 26/38 (2013.01); B32B 15/01 (2013.01); B32B 37/06 (2013.01); B32B 38/0004 (2013.01); C22C 30/00 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); H01F 1/147 (2013.01); H02K 1/02 (2013.01); H02K 1/16 (2013.01); B32B 2307/208 (2013.01); B32B 2310/0843 (2013.01); C22C 2202/02 (2013.01); Y10T 29/49009 (2015.01);
Abstract

A method for producing a laminated core is provided in which a plurality of lamination sheets is partially or completely separated from a strip made of a soft magnetic alloy by laser sublimation cutting, the lamination sheets each having a main surface and a thickness d. The main surface of a first of the lamination sheets is stacked on the main surface of a second of the lamination sheets in a direction of stacking and the main surfaces of the first and the second lamination sheets are substance-to-substance joined at a plurality of points by laser welding, a plurality of filler-free joints being formed between the between the first and the second lamination sheets and being entirely surrounded by the main surfaces of the first and the second lamination sheets.

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